I like one-word names, a lot, but Manifold Garden is far more memorable than Relativity. According to designer William Chyr, among other things, the title "didn't fit the direction the game was going."
So, there we go: when you think about ...

When you jump off a ledge in Willy Chyr's Relativity, you can keep falling. Forever.
The abstract world, made up of floating platforms and puzzle rooms, loops. Why climb a huge flight of stairs when you can just "fall" to the top? But that'...